Session Al 27.5 Frame Set | Trek Bikes (IE)
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Session Al 27.5 Frame Set

€2,099.00(MSRP) (MSRP) (MSRP) Model 17408
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Going down?

World Cup champion Session is built to win. An all-new OCLV Carbon frame, updated geometry, advanced air shock and a stiffer chassis make this downhill race bike faster than ever.

Session is the DH bike that excels on downhill's most brutal courses. Take on any terrain with our most advanced suspension and a geometry that can be dialled for every race.

Product details

  • Built for fast 27.5˝ wheels to get you down the mountain first
  • Exclusive suspension tech with ABP and Full Floater
  • Mino Link adjustable geometry lets you fine tune your ride
  • Internal routing and integrated frame protection


  • Frameset

    Alpha Platinum Aluminium, ABP, Full Floater, EVO Link, E2 tapered head tube, Mino Link, integrated frame protection, internal control routing, MicroTruss, downtube guard, ISCG Mount, 210 mm travel
    Rear suspension
    Fox Performance VAN, externally adjustable rebound and low-speed compression, tuned by Trek Suspension Lab, 8.75x2.75˝ (S 80 kg/400 lb/M 204 kg/450 lb/L 227 kg/500 lb/XL 227 kg/500 lb spring)
  • Components

    Head set
    FSA Orbit, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom
  • Weight

    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based on Trek pre-production painted frames at the time of publication. Weights may vary in final production

Sizing & fit

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.


Rider Height


All measurements provided in cm unless otherwise stated.

Frame size number Frame size letter Geometry position A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
L L Low 44.5 57.0° 15 63.6° 61.8 35.6 -0.1 44.5 5.2 11.8 122.7 74.4 42.6 60.7
M M Low 44.5 57.0° 15 63.6° 59.4 35.6 -0.1 44.5 5.2 11.8 120.3 74.8 40.2 60.7
S S Low 41.2 57.0° 15 63.6° 57.4 35.6 -0.1 44.5 5.2 11.8 118.3 75.5 38.2 60.7
XL XL Low 48.3 57.0° 15 63.6° 64.2 35.6 -0.1 44.5 5.2 11.8 125.1 74.9 45.0 60.7

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